基于无线多媒体处理器的无线可视门铃系统

Wireless Visual Door Bell System Based on Wireless Multimedia Processor

为提高数字式无线可视门铃的系统性能并降低成本,本文采用单一的无线多媒体嵌入式微处理器SN93331或SN93330设计无线可视门铃的室内外分机,每个分机只需采用单个处理器就可完成音视频采集、数字化处理、无线2.4 G自适应跳频控制及嵌入式系统的信息控制,是控制系统的核心。硬件电路还包括相应的低功耗设计电路、无线射频功率放大电路、模拟量触控按键输入电路等,软件采用嵌入式单片机C语言开发,包括液晶显示、MPEG-4编码、解码算法程序,无线传输协议等。该数字式无线可视门铃系统设计简洁、性能可靠、低价高质、应用广泛。

In order to improve the system performance and reduce costs of digital wireless visual doorbells,a single wireless multimedia embedded microprocessor SN93331 or SN93330 can be used to design indoor and outdoor extensions for wireless visual doorbells.In the extension,a single processor can be used to complete audio video acquisition,digital processing,wireless 2.4 G adaptive frequency hopping control,and system signal control.The hardware system also includes low-power design circuits,wireless RF power amplification circuits,analog touch button input circuits,etc.Embedded processor system developed using C language,including LCD display program,MPEG-4 encoding and decoding algorithm program,wireless transmission protocols,etc.The design of the digital wireless visual doorbell system is simple,reliable in performance,low in price and high in quality,and can be widely used.